scholarly journals Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) Material for Actuator Applications

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Hana Uršič ◽  
Marina Santo Zarnik ◽  
Marija Kosec
Keyword(s):  
Solid Solution ◽  
Electric Field ◽  
Single Crystals ◽  
Functional Properties ◽  
Applied Electric Field ◽  
Thick Films ◽  
Promising Material

Due to its large piezoelectric and electrostrictive responses to an applied electric field the (1−x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 (PMN-PT) solid solution has been widely investigated as a promising material for different actuator applications. This paper discusses some of the recent achievements in the field of PMN-PT piezoelectric and electrostrictive actuators manufactured from PMN-PT single crystals, bulk ceramics, or thick films. The functional properties of PMN-PT materials and some representative examples of the investigated PMN-PT actuator structures and their applications are reported.

Shape of piezoelectric hysteresis loop for non-ferroelastic switching

2003 ◽  
Vol 784 ◽  
Author(s):  
A. K. Tagantsev ◽  
P. Muralt ◽  
J. Fousek
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Hysteresis Loop ◽  
Single Crystals ◽  
Applied Electric Field ◽  
Piezoelectric Coefficient ◽  
Hysteresis Loops ◽  
Simple Theory ◽  
The Difference

ABSTRACTA simple theory for the shape of the piezoelectric hysteresis loops (piezoelectric coefficient d vs. applied electric field E) is developed for the case of non-ferroelelastic 180° switching in ferroelectrics. The theory provides explanations for specific features of piezoelectric hysteresis loops, which have been observed in single crystals, thin films and in ceramics in particular. The piezoelectric coefficient may show a “hump”, i.e. when E decreases from the tip of the loop down to zero, d passes through a maximum, and a “nose”, i.e. a self-crossing of the loop close to its tips. The theory also explains the difference in the coercive fields seen in the polarization and piezoelectric loops.

Large electric-field-induced strain in Bi0.5Na0.5TiO3–Bi0.5K0.5TiO3 solid solution single crystals

2008 ◽  
Vol 93 (24) ◽  
pp. 242903 ◽  
Author(s):  
Makoto Izumi ◽  
Katsuya Yamamoto ◽  
Muneyasu Suzuki ◽  
Yuji Noguchi ◽  
Masaru Miyayama
Keyword(s):  
Solid Solution ◽  
Electric Field ◽  
Single Crystals ◽  
Large Electric Field ◽  
Electric Field Induced Strain

scholarly journals Электрически активные состояния захвата и переноса заряда, обусловливающие медленную рекомбинацию в кристаллах бромида таллия при низких температурах

2018 ◽  
Vol 52 (2) ◽  
pp. 171
Author(s):  
В. Кажукаускас ◽  
Р. Гарбачаускас ◽  
С. Савицки
Keyword(s):  
Activation Energy ◽  
Electric Field ◽  
Single Crystals ◽  
Applied Electric Field ◽  
Thermal Activation ◽  
Thermal Quenching ◽  
Activation Energies ◽  
Trap States ◽  
Optical Generation ◽  
Stockbarger Method

AbstractTlBr single crystals grown by the Bridgman–Stockbarger method are studied. It is established that frozen-conductivity effects manifest themselves under interband excitation by light at temperatures below 200 K. Herewith, clearly pronounced superlinear dependences of the induced photoconductivity on the strength of the applied electric field manifest themselves. The results of studying thermally stimulated conductivity evidence that these phenomena can be associated with the filling of trap states with thermal activation energies of 0.08–0.12 eV. This state can be removed due to thermal quenching at temperatures of ≳180 K because of the emptying of energy states with an activation energy of 0.63–0.65 eV filled after optical generation.

Development of Lead-Free Piezoelectric Materials Using Domain Wall Engineering

2006 ◽  
Vol 320 ◽  
pp. 151-154
Author(s):  
Satoshi Wada ◽  
Koichi Yako ◽  
Tomomitsu Muraishi ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi
Keyword(s):  
Barium Titanate ◽  
Domain Wall ◽  
Electric Field ◽  
Single Crystals ◽  
Electric Fields ◽  
Applied Electric Field ◽  
Piezoelectric Materials ◽  
Domain Size ◽  
Lead Free ◽  
Gradient Domain

For the [111] oriented barium titanate (BaTiO3) single crystals, the patterning electrode was applied to induce the finer engineered domain configurations with domain size of 3 2m. The poling treatment was performed at 134 °C under electric fields below 6 kV/cm to inhibit the burning of the patterning electrode with photoresist. As the results, the gradient domain sizes from 3 to 8-9 2m were induced into the 31 resonator. The d31 was measured at -243.2 pC/N, and this value was almost 70 % of the expected d31 of –337.7 pC/N for the resonator with domain size of 3 2m. This difference was originated from lower applied electric field below 6 kV/cm. However, this study was revealed that the patterning electrode was very powerful tool to induce much finer domain sizes below 5 2m.

scholarly journals Chelating Agent Functionalized Substrates for the Formation of Thick Films via Electrophoretic Deposition

2021 ◽  
Vol 9 ◽  
Author(s):  
Sara C. Mills ◽  
Natalie E. Starr ◽  
Nicholas J. Bohannon ◽  
Jennifer S. Andrew
Keyword(s):  
Electric Field ◽  
Electrophoretic Deposition ◽  
Applied Electric Field ◽  
Particle Concentration ◽  
Chelating Agents ◽  
Thick Films ◽  
Substrate Interactions ◽  
Conductive Substrates ◽  
Film Substrate ◽  
Deposition Conditions

Incorporating nanoparticles into devices for a wide range of applications often requires the formation of thick films, which is particularly necessary for improving magnetic power storage, microwave properties, and sensor performance. One approach to assembling nanoparticles into films is the use of electrophoretic deposition (EPD). This work seeks to develop methods to increase film thickness and stability in EPD by increasing film-substrate interactions via functionalizing conductive substrates with various chelating agents. Here, we deposited iron oxide nanoparticles onto conductive substrates functionalized with three chelating agents with different functional moieties and differing chelating strengths. We show that increasing chelating strength can increase film-substrate interactions, resulting in thicker films when compared to traditional EPD. Results will also be presented on how the chelating strength relates to film formation as a function of deposition conditions. Yield for EPD is influenced by deposition conditions including applied electric field, particle concentration, and deposition time. This work shows that the functionalization of substrates with chelating agents that coordinate strongly with nanoparticles (phosphonic acid and dopamine) overcome parameters that traditionally hinder the deposition of thicker and more stable films, such as applied electric field and high particle concentration. We show that functionalizing substrates with chelating agents is a promising method to fabricate thick, stable films of nanoparticles deposited via EPD over a larger processing space by increasing film-substrate interactions.

Evolution of the optical properties of Pb0.94Ba0.06Sc0.5Nb0.5O3 (PBSN-6) solid solution single crystals caused by a static electric field

2003 ◽  
Vol 45 (6) ◽  
pp. 1112-1117
Author(s):  
L. S. Kamzina ◽  
I. P. Raevskii ◽  
V. V. Eremkin ◽  
V. G. Smotrakov ◽  
E. V. Sakhkar
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Electric Field ◽  
Single Crystals ◽  
Static Electric Field

LIQUID CRYSTLASLIGHT SCATTERING BY FLUCTUATIONS INDUCED BY AN APPLIED ELECTRIC FIELD IN A NEMATIC LIQUID CRYSTAL (APAPA)

1972 ◽  
Vol 33 (C1) ◽  
pp. C1-63-C1-67 ◽  
Author(s):  
M. BERTOLOTTI ◽  
B. DAINO ◽  
P. Di PORTO ◽  
F. SCUDIERI ◽  
D. SETTE
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Nematic Liquid Crystal ◽  
Applied Electric Field
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